Segment Reporting Net Sales (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting
Net Sales	$ 2,486.2	$ 2,841.6	$ 2,948.3	$ 2,303.3	$ 2,418.7	$ 2,934.2	$ 3,085.2	$ 2,331.5	$ 10,579.4	$ 10,769.6	$ 11,002.8
Maximum Percentage of Sales Accounted for by Single Customer									10.00%
Unaffiliated Customers
Segment Reporting
Net Sales									$ 10,579.4	10,769.6	11,002.8
U.S.
Segment Reporting
Net Sales									7,241.3	7,259.9	7,505.7
U.S. | US Sales to International [Domain]
Segment Reporting
InterSegment Sales									94.2
U.S. | US Sales to Canada [Domain]
Segment Reporting
InterSegment Sales									17.5
United States and Territories [Member] | Unaffiliated Customers
Segment Reporting
Net Sales									7,244.9	7,272.1	7,493.6
Canada
Segment Reporting
Net Sales									1,307.4	1,392.1	1,458.0
Canada | Canada Sales to US [Domain]
Segment Reporting
InterSegment Sales									12.0
Canada | Unaffiliated Customers
Segment Reporting
Net Sales									1,231.3	1,298.2	1,358.4
United Kingdom | Unaffiliated Customers
Segment Reporting
Net Sales									1,119.1	1,184.6	1,172.8
Other foreign countries | Unaffiliated Customers
Segment Reporting
Net Sales									$ 984.1	$ 1,014.7	$ 978.0